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. 2018 Jan 23;5(1):e2. doi: 10.2196/mental.8324

Table 3.

Cronbach alpha values for all validated measures using postintervention data (ncon=86, nexp=77).

Survey component Cronbach alpha
PSSa .86
QIDS-SRb .80
State-Trait Anxiety Inventory (STAI) state .95
STAI trait .90
PSQIc .72
Physfunct .88
Physlim .83
Emolim .83
Energy .77
Emowell .82
Socialfunct .83
Pain .83
Genhealth .78

aPSS: Perceived Stress Scale.

bQID-SR: Quick Inventory of Depressive Symptomatology Self-Report.

cPSQI: Pittsburg Sleep Quality Index.